550 A Fuses 106

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Part RoHS Manufacturer Circuit Protection Type Mounting Feature Rated AC Voltage Rated DC Voltage Rated Current Terminal Shape Nominal Joule Integral Minimum Operating Temperature Terminal Finish Rated Breaking Capacity Manufacturer Series Trip Time/Delay Additional Features Pre Arcing Rating (A2/s) Packing Method Body Length/Diameter Body Width Fuse Class JESD-609 Code Rated Voltage Resistance Minimum Pre Arcing Time Fuse Size Built-in Features Dimensions Body Height Reference Standard Maximum Operating Temperature Blow Characteristic

PSR030UL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR071UL0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.2 KV

900 V

550 A

Tab/Blade

87.328 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 900 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.028 in (51.5 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

170M4465

Eaton Corporation

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

34 kJ

200 kA

Box

2.087 in (53 mm)

2.087 in (53 mm)

Indicator

2.087 x 2.087 x 1.969 in (53 x 53 x 50 mm)

1.969 in (50 mm)

CE; IEC; UL

170M3422

Eaton Corporation

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

34 kJ

200 kA

Box

1.772 in (45 mm)

1.772 in (45 mm)

Indicator

1.772 x 1.772 x 1.969 in (45 x 45 x 50 mm)

1.969 in (50 mm)

CE; IEC; UL

170M6809

Eaton Corporation

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

19.5 kJ

200 kA

Box

2.717 in (69 mm)

2.992 in (76 mm)

Indicator

2.717 x 2.992 x 2.992 in (69 x 76 x 76 mm)

2.992 in (76 mm)

CE; DIN 43620; IEC; UL

550FMM

Eaton Corporation

Electric Fuse

Inline/Holder

690 V

350 V

550 A

Tab/Blade

30 kJ

200 kA

Rated Breaking Capacity at 690 VDC: 200000 A

Box

3.268 in (83 mm)

3.268 x 1.969 in (83 x 50 mm)

1.969 in (50 mm)

BS 88; CE

PSR072DL0550X

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

73.858 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.882 in (73.2 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

550E-3C-5.5S

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

80 kA

Hermitically Sealed Part Number

9.75 in (247.65 mm)

9.75 x 15.875 in (247.65 x 403.23 mm)

15.875 in (403.23 mm)

Medium

PSR033FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

2.008 in (51 mm)

Indicator

4.268 in (108.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

PSR031US0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

42.056 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033FL0550H

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.008 in (51 mm)

2.894 in (73.5 mm)

Indicator

3.13 in (79.5 mm)

CCC; CE; CUL; UL; IEC

125 °C (257 °F)

Fast

550E-3C-5.5L

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

80 kA

550E-3C-5.5

9.748 in (247.6 mm)

9.748 x 15.874 in (247.6 x 403.2 mm)

15.874 in (403.2 mm)

PSR072FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Threaded

73.858 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.953 in (75 mm)

2.362 in (60 mm)

Indicator

3.736 in (94.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

LA130URD73TTI0550

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

550 A

End Cap

57 J

100 kA

2.933 in (74.5 mm)

2.933 in (74.5 mm)

Indicator

2.933 x 2.933 x 2.854 in (74.5 x 74.5 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

550-30R-2C-5.5S

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

Hermitically Sealed Part Number

6.38 in (162.05 mm)

6.38 x 15.875 in (162.05 x 403.23 mm)

15.875 in (403.23 mm)

Medium

LA070URD31LI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

52 J

200 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 1.874 in (51 x 51 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

LA130URD73LI0550

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

550 A

Tab/Blade

57 J

100 kA

2.933 in (74.5 mm)

2.933 in (74.5 mm)

Indicator

2.933 x 2.933 x 2.854 in (74.5 x 74.5 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

PSR030FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.969 in (50 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

550-30R-2BI-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

Tab/Blade

2.4 kA

Rated Breaking Capacity=2400A-80000A

7.6 in (193.04 mm)

Indicator

7.6 x 18 in (193.04 x 457.2 mm)

18 in (457.2 mm)

Medium

PSR030FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.969 in (50 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

LA070URD30LI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

52 J

200 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 1.874 in (40 x 40 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

KLH550

Littelfuse

Electric Fuse

Inline/Holder

500 V

450 V

550 A

Tab/Blade

200 kA

KLH

Rated Breaking Capacity at 450 VDC: 20000 A

2 in (50.8 mm)

2 x 2.22 in (50.8 x 56.4 mm)

2.22 in (56.4 mm)

CSA; UL

Fast

550-30R-2C-5.5XS

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

Hermitically Sealed Part Number

6.38 in (162.05 mm)

6.38 x 17.875 in (162.05 x 454.03 mm)

17.875 in (454.03 mm)

Medium

PSX1XLDB0550X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

550 A

Tab/Blade

276.65 kJ

-55 °C (-67 °F)

250 kA

Bulk

4.988 in (126.7 mm)

2.028 in (51.5 mm)

Indicator

2.028 in (51.5 mm)

CUL; UL

125 °C (257 °F)

Fast

LA070URD32TTI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

End Cap

37 J

200 kA

2.374 in (60.3 mm)

2.374 in (60.3 mm)

Indicator

2.374 x 2.374 x 1.929 in (60.3 x 60.3 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

LA070URD30TTI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

End Cap

52 J

200 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 1.929 in (40 x 40 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

LA070URD33TTI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

End Cap

27 J

200 kA

2.933 in (74.5 mm)

2.933 in (74.5 mm)

Indicator

2.933 x 2.933 x 1.929 in (74.5 x 74.5 x 49 mm)

1.929 in (49 mm)

UL

Very Fast

PSR030US0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

44.323 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

1.878 in (47.7 mm)

1.693 in (43 mm)

Indicator

3.067 in (77.9 mm)

CUL; UL

125 °C (257 °F)

Fast

LA070URD32LI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

37 J

200 kA

2.362 in (60 mm)

2.362 in (60 mm)

Indicator

2.362 x 2.362 x 1.874 in (60 x 60 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

PSX3XLFL0550X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

550 A

Threaded

142.79 kJ

-55 °C (-67 °F)

250 kA

Bulk

5.043 in (128.1 mm)

2.894 in (73.5 mm)

Indicator

2.894 in (73.5 mm)

CUL; UL

125 °C (257 °F)

Fast

L50S550

Littelfuse

Electric Fuse

Inline/Holder

500 V

450 V

550 A

Tab/Blade

200 kA

Rated Breaking Capacity at 450 VDC: 20000 A

2 in (50.8 mm)

2 x 2.22 in (50.8 x 56.4 mm)

2.22 in (56.4 mm)

CE; CSA; UL

Very Fast

550-30R-2IB-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

Tab/Blade

2.4 kA

Rated Breaking Capacity=2400A-80000A

18 in (457.2 mm)

Indicator

18 x 18 in (457.2 x 457.2 mm)

18 in (457.2 mm)

Medium

550E3C5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

80 kA

10 m

9.752 in (247.7 mm)

Striker

9.75 x 15.875 in (247.65 x 403.23 mm)

15.874 in (403.2 mm)

Medium

LA070URD32KI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

37 J

200 kA

2.362 in (60 mm)

2.362 in (60 mm)

Indicator

2.362 x 2.362 x 1.874 in (60 x 60 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

LA30QS550-4

Littelfuse

Electric Fuse

Inline/Holder

300 V

300 V

550 A

Tab/Blade

190 J

200 kA

Rated Breaking Capacity at 300 VDC: 20000 A

1.5 in (38.1 mm)

1.5 x 1.579 in (38.1 x 40.1 mm)

1.579 in (40.1 mm)

UL

Very Fast

PSR033UL0550X

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

1.976 in (50.2 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSR033FS0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

23.314 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.894 in (73.5 mm)

2.008 in (51 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

PSX1XLUB0550X

Littelfuse

Electric Fuse

Inline/Holder

1.5 KV

550 A

Tab/Blade

276.65 kJ

-55 °C (-67 °F)

250 kA

Bulk

4.988 in (126.7 mm)

2.028 in (51.5 mm)

Indicator

2.028 in (51.5 mm)

CUL; UL

125 °C (257 °F)

Fast

LA120URD71LLI0550

Littelfuse

Electric Fuse

Inline/Holder

1.2 KV

550 A

Tab/Blade

84 J

100 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 2.854 in (51 x 51 x 72.5 mm)

2.854 in (72.5 mm)

UL

Very Fast

PSR073UL0550X

Littelfuse

Electric Fuse

Inline/Holder

1.3 KV

1 KV

550 A

Tab/Blade

55.513 kJ

-55 °C (-67 °F)

100 kA

Rated Breaking Capacity at 1000 VDC: 150000 A

Bulk

2.921 in (74.2 mm)

2.894 in (73.5 mm)

Indicator

4.268 in (108.4 mm)

CUL; UL

125 °C (257 °F)

Fast

550-30R-2C-5.5XW

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

Part Number With Hookeye Attachment

6.38 in (162.05 mm)

6.38 x 17.875 in (162.05 x 454.03 mm)

17.875 in (454.03 mm)

Medium

PSR031FL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Threaded

42.056 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.969 in (50 mm)

Indicator

3.402 in (86.4 mm)

CCC; CUL; UL

125 °C (257 °F)

Fast

550E-3CL-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

Tab/Blade

80 kA

11.56 in (293.62 mm)

11.56 x 16.13 in (293.62 x 409.7 mm)

16.13 in (409.7 mm)

Medium

550-30R-2C-5.5X

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

End Cap

2.4 kA

15 s

6.382 in (162.1 mm)

Striker

6.38 x 17.875 in (162.05 x 454.03 mm)

17.875 in (454.03 mm)

40 °C (104 °F)

Medium

PSR031UL0550Z

Littelfuse

Electric Fuse

Inline/Holder

700 V

600 V

550 A

Tab/Blade

42.056 kJ

-55 °C (-67 °F)

200 kA

Rated Breaking Capacity at 600 VDC: 150000 A

Bulk

2.028 in (51.5 mm)

1.937 in (49.2 mm)

Indicator

3.402 in (86.4 mm)

CUL; UL

125 °C (257 °F)

Fast

LA070URD30KI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

52 J

200 kA

1.575 in (40 mm)

1.575 in (40 mm)

Indicator

1.575 x 1.575 x 1.874 in (40 x 40 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

550-30R-2B-5.5

Littelfuse

Electric Fuse

Inline/Holder

5.5 KV

550 A

Tab/Blade

2.4 kA

Rated Breaking Capacity=2400A-80000A

8.4 in (213.36 mm)

Indicator

8.4 x 18 in (213.36 x 457.2 mm)

18 in (457.2 mm)

Medium

LA070URD31KI0550

Littelfuse

Electric Fuse

Inline/Holder

700 V

550 A

Tab/Blade

52 J

200 kA

2.008 in (51 mm)

2.008 in (51 mm)

Indicator

2.008 x 2.008 x 1.874 in (51 x 51 x 47.6 mm)

1.874 in (47.6 mm)

UL

Very Fast

Fuses

A fuse is an electrical safety device that is designed to protect an electrical circuit from damage caused by overcurrent. Fuses are commonly used in residential, commercial, and industrial electrical systems, and they are an important safety device that helps prevent electrical fires, equipment damage, and personal injury.

A fuse typically consists of a metal wire or filament that is enclosed in a fuse body, which is designed to protect the wire from damage. The fuse is connected in series with the electrical circuit, and when the current flowing through the circuit exceeds a preset level, the wire in the fuse will melt or blow, which opens the circuit and prevents further damage to the electrical system.

Fuses are available in a variety of types and sizes, and they can be classified based on their current rating, voltage rating, and speed of operation. Some common types of fuses include cartridge fuses, blade fuses, and plug fuses.

In addition to protecting electrical systems from overcurrent, fuses can also be used to protect electrical equipment and machinery from damage caused by short circuits or other types of electrical faults. They are a cost-effective and reliable method of electrical protection, and they are widely used in a variety of electrical applications.